Vaccum hold down

[avengine]

I want to build a vacuum hold down for router to cut light material like pvc, coroplast etc, about 1/4", any idea what is the best way to do something like this?
Thanks.

[joecnc2006]

you could use Vacuum Pucks, for hold downs, best thing is they are adjustable location wise on your cutting bed.

[avengine]

where is the good place to get it? how big the vacuum pump can do the trick?

[joecnc2006]

here is a sample. should be pretty easy to construct or get there.

http://www.iedu.com/DeSoto/assembly.html

joe